package com.mornd.server.config.security.component;

import com.mornd.server.constant.SecurityConst;
import org.springframework.security.access.AccessDecisionManager;
import org.springframework.security.access.AccessDeniedException;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.authentication.AnonymousAuthenticationToken;
import org.springframework.security.authentication.InsufficientAuthenticationException;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.stereotype.Component;

import java.util.Collection;

/**
 * @author mornd
 * @date 2021/2/3 - 16:29
 * 权限控制
 * 判断用户角色
 */
@Component
public class CustomUrlDecisionManager implements AccessDecisionManager {
    @Override
    public void decide(Authentication authentication, Object o, Collection<ConfigAttribute> collection) throws AccessDeniedException, InsufficientAuthenticationException {
        for (ConfigAttribute configAttribute : collection) {
            //当前url所需的角色
            String needRole = configAttribute.getAttribute();
            //判断角色是否登录即可访问，此角色在CustomFilter中设置
            if(SecurityConst.DEFAULT_ROLE.equalsIgnoreCase(needRole)){
                //判断是否登录
                if(authentication instanceof AnonymousAuthenticationToken){
                    throw new AccessDeniedException("尚未登录，请先登录！");
                } else {
                    return;
                }
            }
            //判断用户角色是否为url所需角色
            Collection<? extends GrantedAuthority> authorities = authentication.getAuthorities();
            for (GrantedAuthority authority : authorities) {
                if(authority.getAuthority().equals(needRole)){
                    return;
                }
            }
        }
        //throw new AccessDeniedException("您的权限不足！");
    }

    @Override
    public boolean supports(ConfigAttribute configAttribute) {
        return false;
    }

    @Override
    public boolean supports(Class<?> aClass) {
        return false;
    }
}
